Inserting A Derived Value Into A Table
Feb 28, 2008
Hi,
I have built a database for a university project, but am having trouble with the SQL syntax for inserting derived data from a calculation into a table. At present my SQL is;
INSERT INTO MemberPayment (TotalCharge) VALUES ( [Total] )
SELECT ((MileageHistory.MileageUrban * Vehicle.EmissionsPerGramUrban) * 0.05) + ((MileageHistory.MileageCountry * Vehicle.EmissionsPerGramUrban) * 0.05) AS 'Total'
FROM [NeuCar].[dbo].[MileageHistory] JOIN [NeuCar].[dbo].[Vehicle]
ON MileageHistory.Registration = Vehicle.Registration
JOIN [NeuCar].[dbo].[Member] ON Vehicle.UserName = Member.UserName
WHERE Member.UserName = 'wenger1' AND (MileageHistory.[Date] >= CURRENT_TIMESTAMP - 30);
Would anybody be able to point out where I am going wrong? I would very much appreciate any advice,
Kind regards,
Chima
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Oct 10, 2007
I am trying to insert data into two different tables. I will insert into Table 2 based on an id I get from the Select Statement from Table1.
Insert Table1(Title,Description,Link,Whatever)Values(@title,@description,@link,@Whatever)Select WhateverID from Table1 Where Description = @DescriptionInsert into Table2(CategoryID,WhateverID)Values(@CategoryID,@WhateverID)
This statement is not working. What should I do? Should I use a stored procedure?? I am writing in C#. Can someone please help!!
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Jan 22, 2008
Hi, I wanna know is there any advantage of perf gain when using Derived Tables over Temp Tables, advice me which one is better to use. Can I create Indexes and Insert/Update records into Derived Tables.
-Senthil
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Mar 10, 2006
I have 3 tables TableA , TableB and TableC
I have to update tableA with the value of TableB by checking A.Field=B.Field
and TABLEB as condition that B.Field should exists in tableC
Update A Set A.Field=B.Field From tableA A
(select B.Field From TableB B where B.Field=A.Field and B.Field in (select C.Field
From tableC C))
How to do it correctly.
Thanks in advance
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Jan 31, 2008
I have created a table Table with name as Varchar and id as int. Now i have started inserting the rows like, insert into Table values ('arun',20).Yes i have inserted a row in the table. Now i have got the values " arun's ", 50. insert into Table values('arun's',20) My sqlserver is giving me an error instead of inserting the row. How will you solve this problem?
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Oct 6, 2004
I got an error as follows:
Derived table 'A' is not updatable because a column of the derived table is derived or constant.
when I tried to run this query:
update A set MonthsUnbilled =99999888
FROM (select MonthsUnbilled from dbo.vw_MasterView
WHERE (RecordID =8377396)) A
This is a simplified query in order to pinpoint the culprit. I know I don't need to use a derived table if the real query is this simple.
Thanks in advance!
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May 12, 2008
Below is my sql, i am getting error msg "Incorrect sytax near 'Votes'."
Can anyone tell me what im doin wrong?
UPDATE #TblExposure
SET E.Unity =
(
SELECT
-- DealId ,DocketId,
CASE Participant2
WHEN nullTHEN 'NA'
ELSE
CASE WHEN Participant2-Vote2 =0 THEN 'Yes'
ELSE 'No'
END
END AS Unanimous1
FROM #tblVoting
) Votes
FROM #tblExposure E INNER JOIN Votes
ONVotes.Dealid = E.Dealid
AND Votes.DocketId =E.DocketId
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Jul 30, 2013
I want to rank the below table by Sum [Pts} Desc AS Position?
,Sum(Games) as Pl
,SUM(Win) as W
,SUM(Draw) as D
,SUM(Loss) as L
,SUM(F) as F
,SUM(A) as A
,SUM(Total) as Tot
,ROUND(AVG(GPG),2) AS GPG
[code].....
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Feb 1, 2007
OBJECTIVE:THE QUERY SHOULD GIVE ME THE FIELDS I MENTIONED IN THE FIRST QUERY WITH THE CONDITIONS BELOW.
CONDITION 1: RateReview field should have yesterday's date
CONDITION 2: Email will be send to customer only once so Customer_GUID is UniqueIdentifier
CONDITION 3: Customer shouldnt' have opted to get out from receiving any email so Termination field should be NULL
ONe Customer can have many transwactions
Is there any way i write the code specifying that no email should be sent more than once evereven if customer buys 10 tickets.
Only one email sent so i need to specify that if this email has gone to particulare CUSTOMER_GUID then Ignore that record and
do not send any email. This would be done by some tool known as StrongMail.
SELECT
CAST(a.Transaction_GUID AS varchar(36)) as Transaction_GUID,
CAST(a.Customer_GUID AS varchar(36)) as Customer_GUID,
Film_id as MovieId,
First_nm as FirstName,
Last_nm as LastName,
Email_nm as EmailAddress
FROm
Table1 where RateReview_dm >= dateadd(day, datediff(day, 0, getdate()), -1) -- Greater or same as Yesterday day
and RateReview_dm < dateadd(day, datediff(day, 0, getdate()), 0) -- Less than today's date
and
and Terminate_dm is null
(I don;t know what condition to give that same customer good should not be send email again if send once)
i don't know whether i need to create a derive table or it can work without drive table
Cananyone help me with this query please
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Jul 20, 2005
I've created this:SELECTc.ProjectID,Count(c.ID) as 'Registrants',Count(dt.Hits) as 'Submissions'FROMCME_TBL cJOIN(SELECT ProjectID, Count(*) as Hits FROM CME_TBLWHERE evalDate Is Not NULL OR testDate Is Not NULLGROUP BY ProjectID) dtON c.ProjectID = dt.ProjectIDGROUP BYc.ProjectIDORDER BYc.ProjectIDand I get this:ProjectID Registrants Submissions--------- ----------- -----------adv_104699 99adv_1047185 185adv_110566 66boh_107134 34Instead, I want this:ProjectID Registrants Submissions--------- ----------- -----------adv_104699 14adv_1047185 82adv_110566 17boh_107134 12The "ProjectID" and "Submissions" columns are produced when I run thederived table (dt, above) as a standalone query. By the same token,the "Project ID" and "Registrants" columns are produced when I run the"outer" query, above.Am I on the right track here?TIA,-- Bill
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Jul 20, 2005
Hi all,I have a table in this formatcolname1 colname2 colname3col1data1 col2data1 col3data1col1data2 col2data2 col3data2col1data3 col2data3 col3data3col1data4 col2data4 col3data4I want to display it in this formatcolname1 col1data1 col1data2 col1data3 col1data4colname2 col2data1 col2data2 col2data3 col2data4colname3 col3data1 col3data2 col3data3 col3data4Basically rotate it through 90 degrees clockwise and flip it over :)I'm pretty sure this is done by using a crosstab query and or aderived table or temp table. The problem is I use a crosstab query toget the original data into the first format. I've been strugglingtrying to get the ouptput into the second format for over a day nowand just can't seem to get it to work. Can anyone give me any pointerson the general solution to this?I hope this makes sense. Thanks for the help.
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Feb 7, 2007
I have an application that has two different database backends, one is SQL Server Compact Edition and the other is SQL Server. The reason is because the application may run at home on one of our sales agent's computers or here in the office.
I have a query that uses a derived table and works just fine in SQL Server, however when I run it in the compact edtion (having the exact same table structures) it will not run. My question is...does the Compact Edtion or the Mobile Edition allow derived tables. If not is there a way to work around this? I will happily give an example if it will help.
Thank you,
Adam
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Jul 31, 2007
I have some questions on derived table. Below is my situation.
Table order, there are 40 columns and it has indexes for productID and addressID
Table product, there are 15 columns and it has index for productID
Table address, there are 20 columns and it has index for addressID
Query A
-------
select C.address, C.area, B.productname, B.category, A.qty, A.price
from order A
join product B
on A.productID = B.productID
join address C
on A.addressID = C.addressID
Query B
-------
select C.address, C.area, B.productname, B.category, A.qty, A.price
from (select qty, price, productID, addressID from order) A
join (select productID, productname, category from product) B
on A.productID = B.productID
join (select addressID, address, area from address) C
on A.addressID = C.addressID
Will I loss the indexing when using derived table?
Why query B performance is much better than query A?
Thanks.
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Nov 20, 2001
Hi All,
Can any one give me code sample which uses the recordset returned by the execution of a stored procedure as a derived table.
Thanks,
venkat.
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Jun 11, 2006
Hi,I got another question here:I want to use query like this:SELECT * FROM (sp_lock AS T) WHERE objectID = ...The purpose is that I want to query the result set returned by sp_lockusing derived table, but it doesn't work. Why?Thanks,Baihao--Posted via Mailgate.ORG Server - http://www.Mailgate.ORG
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Feb 19, 2008
Hi,
I am working for my client on SQL 2005 Enterprise & observed a strange behaviour. Consider a table(EMPTABLE) as below:
PK, INT
VARCHAR
EMPID
EMPNAME
1
A
2
B
3
C
4
D
5
E
6
F
7
G
8
H
9
I
10
J
Now, I wanted the 5th highest EMPID from 2 from the table. Now, we know that the SQL
SELECT TOP 6 EMPID FROM EMPTABLE WHERE EMPID >=2 should (from all other possibilities) return me the desired value as the last row of the output table. I tried to get this in a derived table & get the MAX value i.e.
SELECT MAX(EMPID) FROM
(
SELECT TOP 6 EMPID FROM EMPTABLE WHERE EMPID >=2
) der
But this returns me 10, when I would've thought 7 was the expected answer
I remodified my query as mentioned below to strangely get 7 as the result...
SELECT MAX(EMPID) FROM
(
SELECT TOP 6 EMPID FROM EMPTABLE WHERE EMPID >=2 ORDER BY EMPID ASC
) der
How did the ORDER BY hep it???
Also, if I use
SELECT MAX(EMPID) FROM
(
SELECT TOP 6 EMPID FROM EMPTABLE WHERE EMPID >2
) der
I get the same result without having to specify the ORDER BY in my derived TABLE...
I tried looking for similar threads. But nothing could explain this to me...
If anyone knows what I am not able to understand, please let me know.
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Sep 21, 2005
Relative SQL newbie here......this is probably easy, but....Lets say I have a table (MainTable) that stores a list of input table names,a primary key (PKey), and a field called "Configured" for each one. Each ofthese input tables also contain a field called "Configured", which is set totrue or false in another process based on an OrderNumber. (So an order'sinputs are stored in several input tables, and the MainTable is a summarytable that shows which input tables have been configured for any givenOrderNumber).What I need to do is open each input table, and look for a record containinga specific OrderNumber and where Configured=true. If a record is found, Ineed to update the Configured field for that table in the MainTable, andthen move on to the next sub-table.The way I'm doing it now is with simple SQL and loops. Here is the basiccode (ASP):*****************************************OrderNumber = "562613" ' the current order that is being processed' reset all configured flagssql = "UPDATE MainTable SET Configured = 0"conn.execute sql, , &H00000080' get list of all tablenamessql = "SELECT InputTableName, PKey FROM MainTable WHERE InputTableName <>'---'"set rsTableNames = conn.execute(sql)while not rsTableNames.eof' test each input table for configured flagsql = "SELECT Configured FROM " & rsTableNames("InputTableName")& _" WHERE Configured = 1 AND OrderNumber = '" & OrderNumber &"'"set rs = conn.execute(sql)If Not rs.EOF Then' update the main tablesql = "UPDATE MainTable SET Configured = 1 WHERE PKey='" &rsTableNames("PrimaryKey") & "'"conn.execute sql, , &H00000080end ifset rs = nothingrsTableNames.movenextwend*****************************************There has to be a faster way.. I think.... maybe something that could bewritten as a stored procedure? I use a similar technique in a couple ofother places and it's a bit of a performance hit, especially as the numberof input tables grows.TIA!Calan
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Apr 6, 2007
Dear friends, can anyone please guide me on how to update table with results from derived column tool?
thanks,
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Aug 1, 2007
I'm trying not to use a temp table, but i may have to do so..
I'm using sql2005 for this case.
i have a derived table that makes the following results:
ID Status Name
2 1 "A"
2 2 "B"
I want to get the following:
ID Name1 Name2
2 "A" "B"
but like I said before, I can't repeat the query that gets the first 2 rows, as it's pretty invovled. a temp table is the best route I see right now, but I just wanted to be sure I'm not missing something. If I've aliased it as 'results', is there a way to alias results again as something else? or maybe a trick with CTEs? I will try that! It seems promising.
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Aug 1, 2007
I'm trying not to use a temp table, but i may have to do so..
i have a derived table that makes the following results:
ID Status Name
2 1 "A"
2 2 "B"
I want to get the following:
ID Name1 Name2
2 "A" "B"
but like I said before, I can't repeat the query that gets the first 2 rows, as it's pretty invovled. a temp table is the best route I see right now, but I just wanted to be sure I'm not missing something.
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Nov 2, 2014
In my TSQL code i use a derived table to extract the value of account 321 to compare if they are the same that the SUM of my line invoice cost multiply by quantity line : Sum(fi.ecusto*qtt)
This is my script:
SELECT ft.ndoc [Doctype],ft.fno [Docnr] , Sum(fi.ecusto*qtt) [totalcostof my Invoiceline], xctb.conta [accountancy account],
sum(Case when ft.tipodoc = 1 then Xctb.ecre else Xctb.edeb end) as [Value of Cost of invoice in accountancy],
[DIF] = Sum(fi.ecusto*qtt) - Sum(Case when ft.tipodoc = 1 then xctb.ecre else xctb.edeb end)
[Code] ....
My problem is if i have more than on line on my invoice, for example 2 lines, the value of column [Value of Cost of invoice in accountancy] are duplicated, for 3 line invoice the value are multiply by 3.
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Jan 31, 2008
When my colleague makes any change to a query containing a derived table, the word 'WITH' followed by a lot of graphical characters appears after the alias, rendering the query unusable. We have tried this with various existing and new, simple queries, all to no avail. We are editing the queries in Visual Studio 2003, and he does not get this effect when using Visual Studio 2005. I can edit the query in 2003 on my laptop with no ill effects.
Help!
Karen
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Jul 23, 2007
I have discovered what looks like a bug in the optimiser. I've posted it at https://connect.microsoft.com/SQLServer/feedback/ViewFeedback.aspx?FeedbackID=288243 but I wonder if any of you with SQL 2005 RTM, 2005 SP1 or 2008 CTP could confirm when this was introduced and whether it is still an issue?
Code Snippet
-- Bug report
-- 2007/07/19
-- Alasdair Cunningham-Smith
-- alasdair at acs-solutions dot co dot uk
set nocount on
go
-- example date in in British date format
set dateformat dmy
go
use tempdb
go
create table foo( bar varchar( 30 ) not null )
go
insert into foo( bar ) values ( 'fishy' )
insert into foo( bar ) values ( '19/07/2007' )
go
-- this works fine in all versions - only valid dates are passed to the convert function
select
convert( smalldatetime, bar, 103 ) as bardate
from
foo
where
bar like '__/__/____'
go
-- this works on SQL 2000, but fails on SQL 2005 SP2 (I've not tried other SPs of SQL 2005):
-- Msg 295, Level 16, State 3, Line 2
-- Conversion failed when converting character string to smalldatetime data type.
--
-- I believe the query is rewritten as if the derived table query contained
-- "and convert( smalldatetime, bar, 103 ) < getdate()"
-- which would expose the convert to the invalid data
select
*
from
(
select
convert( smalldatetime, bar, 103 ) as bardate
from
foo
where
bar like '__/__/____'
) as derived
where
bardate < getdate()
go
-- Workaround:
-- Use a case statement to protect the convert operator from the invalid data
select
*
from
(
select
case when bar like '__/__/____' then
convert( smalldatetime, bar, 103 )
else
null
end as bardate
from
foo
where
bar like '__/__/____'
) as derived
where
bardate < getdate()
go
drop table foo
go
The workaround I discovered is simple but ugly. I invite your comments...
alasdair.
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Jul 22, 2015
how to declare multiple derived columns in SSIS Derived Column Task in one attempt.as i have around 150 columns coming from Flat file. I had created the required Expression in Excel and now i want add those in derived column task but its allowing only 1 expression at a time.
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Oct 25, 2007
I am looking for the best way in SSIS to do the following. I have an SQL table that for each row in the table I want to take an element from the table do a lookup in a Teredata Table, return information from the teredata source. Use that returned data to do some calculations and create a derived column from my calculations and place the data into the same SQL table that I am parsing through.
Ideas?
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Feb 23, 2015
I am trying to insert bulk data into main table from staging table in sql server 2012. If any error comes, this total activity is rollbacked. I don't want that to happen. I want to know the records where ever the problem persists, and the rest has to be inserted.
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Apr 24, 2008
My Pocket PC application exports signature as an image. Everything is fine when choose Use SQL statements in TableAdapter Configuration Wizard.
main.ds.MailsSignature.Clear();
main.ds.MailsSignature.AcceptChanges();
string[] signFiles = Directory.GetFiles(Settings.signDirectory);
foreach (string signFile in signFiles)
{
mailsSignatureRow = main.ds.MailsSignature.NewMailsSignatureRow();
mailsSignatureRow.Singnature = GetImageBytes(signFile); //return byte[] array of the image.
main.ds.MailsSignature.Rows.Add(mailsSignatureRow);
}
mailsSignatureTableAdapter.Update(main.ds.MailsSignature);
But now I am getting error "General Network Error. Check your network documentation" after specifying Use existing stored procedure in TableAdpater Configuration Wizard.
ALTER PROCEDURE dbo.Insert_MailSignature( @Singnature image )
AS
SET NOCOUNT OFF;
INSERT INTO MailsSignature (Singnature) VALUES (@Singnature);
SELECT Id, Singnature FROM MailsSignature WHERE (Id = SCOPE_IDENTITY())
For testing I created a desktop application and found that the same Code, same(Use existing stored procedure in TableAdpater Configuration Wizard) and same stored procedure is working fine in inserting image into the table.
Is there any limitation in CF?
Regards,
Professor Corrie.
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May 24, 2007
Hi, I have a table in which I will insert several redundant data. Don't ask why, is Integration services, it only reads data and inserts it in a SQL table. THis way, I have a SQL table with several lines repeating them selves. What I want to do is create a procedure that reads the distinct data and inserts it in another table, but my problem is that I am not able to select data line by line on the original table to save it in local variables and insert it on the another table, I just can select the last line. I've tried a while cycle but no succeed. Here is my code: create proc insertLocalizationASdeclare @idAp int, @macAp varchar(20), @floorAp varchar(2), @building varchar(30), @department varchar(30)select @idAp = idAp from OLTPLocalization where idAp not in (select idAp from dimLocalization)select @macAp=macAp,@floorAp=floorAp,@building=building,@department=department from OLTPLocalizationif (@idAp <> null)beginInsert into dimLocalization VALUES(@idAp,@macAp,@floorAp,@building,@department)endGO This only inserts the last line in the "oltpLocalization" table. O the other hand, like this:create proc aaaaasdeclare @idAp as int, @macAp as varchar(50), @floorAp as int, @building as varchar(50), @department as varchar(50)while exists (select distinct(idAp) from OLTPLocalization)begin select @idAp =idAp from OLTPLocalization where idAp not in (select idAp from dimLocalization) select @macAp = macAp from OLTPLocalization where idAp = @idAp select @building = building from OLTPLocalization where idAp = @idAp select @department = department from OLTPLocalization where idAP = @idApif (@idAp <> null)begin insert into dimLocalization values(@idAp,@macAp,@floorAp,@building,@department)endendgo this retrieves every distinct idAp in each increment on the while statement. The interess of the while is really selecting each different line in the OLTPLocalization table. I did not find any foreach or for each statement, is there any way to select distinct line by line in a sql table and save each column result in variables, to then insert them in another table? I've also thought about web service, that reads the distinct data from the oltpLocalization into a dataset, and then inserts this data into the dimLocalization table. Is there anything I can do?Any guess?Really needing a hand here!Thanks a lot!
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Oct 22, 2012
I write a insert trigger on my table LeaveRegister(1000 rows) and inserting rows in audit table, but when i inserting a row in LeaveRegister table. In audit table 1000 + 1 rows are inserting every time.
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Aug 14, 2015
Below is my table structure. And I am inserting data from other temp table.
CREATE TABLE #revf (
[Cusip] [VARCHAR](50) NULL, [sponfID] [VARCHAR](max) NULL, GroupSeries [VARCHAR](max) NULL, [tran] [VARCHAR](max) NULL, [AddDate] [VARCHAR](max) NULL, [SetDate] [VARCHAR](max) NULL, [PoolNumber] [VARCHAR](max) NULL, [Aggregate] [VARCHAR](max) NULL, [Price] [VARCHAR](max) NULL, [NetAmount] [VARCHAR](max) NULL,
[Code] ....
Now in a next step I am deleting the records from #revf table. Please see the delete code below
DELETE
FROM #revf
WHERE fi_gnmaid IN (
SELECT DISTINCT r2.fi_gnmaid
FROM #revf r1, #revf r2
[Code] ...
I don't want to create this #rev table so that i can avoid the delete statement. But data should not affect. Can i rewrite the above as below:
SELECT [Cusip], [sponfID], GroupSeries, [tran], [AddDate], [SetDate], [PoolNumber], [Aggregate], [Price], [NetAmount], [Interest],
[Coupon], [TradeDate], [ReversalDate], [Description], [ImportDate], MAX([fi_gnmaid]) AS Fi_GNMAID, accounttype, [IgnoreFlag], [IgnoreReason], IncludeReversals, DatasetID, [DeloitteTaxComments], [ReconciliationID],
[Code] ....
If my above statement is wrong . Where i can improve here? And actually i am getting 4 rows difference.
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Nov 2, 2015
INSERT
INTO [Table2Distinct]
([CLAIM_NUMBER]
,[ACCIDENT_DATE]
[code]....
I used the above query and it still inserts all the duplicate records. What is wrong with my statement?
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Sep 18, 2014
I have a 2010 SSIS package where I am reading csv files with different fields and formatted data, I have created separate packages for each file and I am formatting the data to fit the final destination tables data elements, I've been instructed to create 7 separate packages to read each file and the format the data from the 7 csv files, and insert into their table tbl1, tbl2, tbl3...etc then, I'm taking a execute sql task and wanting to insert the tbl1, tbl2, tbl3...etc into destination table that will be the final table for all reports and other uses.
1- should I create a ID?
2- these files will be read once a month
3- I want to append the data, not drop and recreate each run,
4- It's 2012 SQL and 2010 SSIS
Each csv file is in a different format, some have 15 columns, other have 8 I have to parse the data, in SP to align with the fields in the destination table.
5- Can I force RowID to be the next auto gen number from tbl1,for the start of insert for tbl2, then last row of tbl2 for insert of tbl3???
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Jan 19, 2008
Code Block
Hi,
I'm working on a database for a financial client and part of what i need to do is calculate a value from two separate rows in the same table and insert the result in the same table as a new row. I have a way of doing so but i consider it to be extremely inelegant and i'm hoping there's a better way of doing it. A description of the existing database schema (which i have control over) will help in explaining the problem:
Table Name: metrics_ladder
id security_id metric_id value
1 3 80 125.45
2 3 81 548.45
3 3 82 145.14
4 3 83 123.32
6 4 80 453.75
7 4 81 234.23
8 4 82 675.42
.
.
.
Table Name: metric_details
id metric_id metric_type_id metric_name
1 80 2 Fiscal Enterprise Value Historic Year 1
2 81 2 Fiscal Enterprise Value Current Fiscal Year
3 82 2 Fiscal Enterprise value Forward Fiscal year 1
4 83 2 Fiscal Enterprise Value Forward Fiscal Year 2
5 101 3 Calendar Enterprise value Historic Year 1
6 102 3 Calendar Enterprise Value Current Fiscal Year
5 103 3 Calendar Enterprise value Forward Year 1
6 104 3 Calendar Enterprise Value Forward Year 2
Table Name: metric_type_details
id metric_type_id metric_type_name
1 1 Raw
2 2 Fiscal
3 3 Calendar
4 4 Calculated
The problem scenario is the following: Because a certain number of the securities have a fiscal year end that is different to the calendar end in addition to having fiscal data (such as fiscal enterprise value and fiscal earnings etc...) for each security i also need to store calendarised data. What this means is that if security with security_id = 3 has a fiscal year end of October then using rows with ids = 1, 2, 3 and 4 from the metrics_ladder table i need to calculate metrics with metric_id = 83, 84, 85 and 86 (as described in the metric_details table) and insert the following 4 new records into metrics_ladder:
id security_id metric_id value
1 3 101 <calculated value>
2 3 102 <calculated value>
3 3 103 <calculated value>
4 3 104 <calculated value>
Metric with metric_id = 101 (Calendar Enterprise value Historic Year 1) will be calculated by taking 10/12 of the value for metric_id 80 plus 2/12 of the value for metric_id 81.
Similarly, metric_id 102 will be equal to 10/12 of the value for metric_id 81 plus 2/12 of the value for metric_id 82,
metric_id 103 will be equal to 10/12 of the value for metric_id 82 plus 2/12 of the value for metric_id 83 and finally
metric_id 104 will be NULL (determined by business requirements as there is no data for forward year 3 to use).
As i could think of no better way of doing this (and hence the reason for this thread) I am currently achieving this by pivoting the relevant data from the metrics_ladder so that the required data for each security is in one row, storing the result in a new column then unpivoting again to store the result in the metrics_ladder table. So the above data in nmetrics_ladder becomes:
security_id 80 81 82 83 101 102
----------- -- -- -- -- -- --
3 125.45 548.45 145.14 123.32 <calculated value> <calculated value>
4 ...
.
.
.
which is then unpivoted.
The SQL that achieves this is more or less as follows:
*********
START SQL
*********
declare @calendar_averages table (security_id int, [101] decimal(38,19), [102] decimal(38,19), [103] decimal(38,19), [104] decimal(38,19),etc...)
-- Dummy year variable to make it easier to use MONTH() function
-- to convert 3 letter month to number. i.e. JAN -> 1, DEC -> 12 etc...
DECLARE @DUMMY_YEAR VARCHAR(4)
SET @DUMMY_YEAR = 1900;
with temp(security_id, metric_id, value)
as
(
select ml.security_id, ml.metric_id, ml.value
from metrics_ladder ml
where ml.metric_id in (80,81,82,83,84,85,86,87,88,etc...)
-- only consider securities with fiscal year end not equal to december
and ml.security_id in (select security_id from company_details where fiscal_year_end <> 'dec')
)
insert into @calendar_averages
select temppivot.security_id
-- Net Income
,(CONVERT(DECIMAL, MONTH(cd.fiscal_year_end + @DUMMY_YEAR))/12*[80])
+((12 - CONVERT(DECIMAL, MONTH(cd.fiscal_year_end + @DUMMY_YEAR)))/12*[81]) as [101]
,(CONVERT(DECIMAL, MONTH(cd.fiscal_year_end + @DUMMY_YEAR))/12*[81])
+((12 - CONVERT(DECIMAL, MONTH(cd.fiscal_year_end + @DUMMY_YEAR)))/12*[82]) as [102]
,(CONVERT(DECIMAL, MONTH(cd.fiscal_year_end + @DUMMY_YEAR))/12*[82])
+((12 - CONVERT(DECIMAL, MONTH(cd.fiscal_year_end + @DUMMY_YEAR)))/12*[83]) as [103]
,NULL as [104]
-- Share Holders Equity
,(CONVERT(DECIMAL, MONTH(cd.fiscal_year_end + @DUMMY_YEAR))/12*[84])
+((12 - CONVERT(DECIMAL, MONTH(cd.fiscal_year_end + @DUMMY_YEAR)))/12*[85]) as [105]
,(CONVERT(DECIMAL, MONTH(cd.fiscal_year_end + @DUMMY_YEAR))/12*[85])
+((12 - CONVERT(DECIMAL, MONTH(cd.fiscal_year_end + @DUMMY_YEAR)))/12*[86]) as [106]
,(CONVERT(DECIMAL, MONTH(cd.fiscal_year_end + @DUMMY_YEAR))/12*[86])
+((12 - CONVERT(DECIMAL, MONTH(cd.fiscal_year_end + @DUMMY_YEAR)))/12*[87]) as [107]
,NULL as [108]
-- Capex
-- Sales
-- Accounts payable
etc...
..
..
from temp
pivot
(
sum(value)
for metric_id in ([80],[81],[82],[83],[84],[85],[86],[87],[88],etc...)
) as temppivot
inner join company_details cd on temppivot.security_id = cd.security_id
*********
END SQL
*********
The result then needs to be unpivoted and stored in metrics_ladder.
And FINALLY, the question! Is there a more elegant way of achieving this??? I have complete control over the database schema so if creating mapping tables or anything along those lines would help it is possible. Also, is SQL not really suited for such operations and would it therefore be better done in C#/VB.NET.
Many thanks (if you've read this far!)
M.
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